/[svn]/linuxsampler/trunk/src/engines/EngineBase.h
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Contents of /linuxsampler/trunk/src/engines/EngineBase.h

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Revision 2614 - (show annotations) (download) (as text)
Tue Jun 10 17:22:48 2014 UTC (9 years, 9 months ago) by schoenebeck
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* Fixed silence and another crash.
* Bumped version (1.0.0.svn49).

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005-2008 Christian Schoenebeck *
7 * Copyright (C) 2009-2013 Christian Schoenebeck and Grigor Iliev *
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 * This program is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17 * GNU General Public License for more details. *
18 * *
19 * You should have received a copy of the GNU General Public License *
20 * along with this program; if not, write to the Free Software *
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22 * MA 02111-1307 USA *
23 ***************************************************************************/
24
25 #ifndef __LS_ENGINEBASE_H__
26 #define __LS_ENGINEBASE_H__
27
28 #include "AbstractEngine.h"
29 #include "EngineChannelBase.h"
30 #include "common/DiskThreadBase.h"
31 #include "common/MidiKeyboardManager.h"
32 #include "InstrumentManager.h"
33 #include "../common/global_private.h"
34
35
36 namespace LinuxSampler {
37
38 class AbstractEngineChannel;
39
40 template <
41 class V /* Voice */,
42 class RR /* Root Region */,
43 class R /* Region */,
44 class D /* Disk Thread */,
45 class IM /* Instrument Manager */,
46 class I /* Instrument */
47 >
48 class EngineBase: public AbstractEngine, public RegionPools<R>, public VoicePool<V> {
49
50 public:
51 typedef typename RTList<V>::Iterator VoiceIterator;
52 typedef typename Pool<V>::Iterator PoolVoiceIterator;
53 typedef typename RTList<RR*>::Iterator RootRegionIterator;
54 typedef typename MidiKeyboardManager<V>::MidiKey MidiKey;
55
56 EngineBase() : SuspendedRegions(128) {
57 pDiskThread = NULL;
58 pVoicePool = new Pool<V>(GLOBAL_MAX_VOICES);
59 pRegionPool[0] = new Pool<R*>(GLOBAL_MAX_VOICES);
60 pRegionPool[1] = new Pool<R*>(GLOBAL_MAX_VOICES);
61 pVoiceStealingQueue = new RTList<Event>(pEventPool);
62 iMaxDiskStreams = GLOBAL_MAX_STREAMS;
63
64 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
65 iterVoice->SetEngine(this);
66 }
67 pVoicePool->clear();
68
69 ResetInternal();
70 ResetScaleTuning();
71 ResetSuspendedRegions();
72 }
73
74 virtual ~EngineBase() {
75 if (pDiskThread) {
76 dmsg(1,("Stopping disk thread..."));
77 pDiskThread->StopThread();
78 delete pDiskThread;
79 dmsg(1,("OK\n"));
80 }
81
82 if (pVoicePool) {
83 pVoicePool->clear();
84 delete pVoicePool;
85 }
86
87 if (pVoiceStealingQueue) delete pVoiceStealingQueue;
88
89 if (pRegionPool[0]) delete pRegionPool[0];
90 if (pRegionPool[1]) delete pRegionPool[1];
91 ResetSuspendedRegions();
92 }
93
94 // implementation of abstract methods derived from class 'LinuxSampler::Engine'
95
96 /**
97 * Let this engine proceed to render the given amount of sample points.
98 * The engine will iterate through all engine channels and render audio
99 * for each engine channel independently. The calculated audio data of
100 * all voices of each engine channel will be placed into the audio sum
101 * buffers of the respective audio output device, connected to the
102 * respective engine channel.
103 *
104 * @param Samples - number of sample points to be rendered
105 * @returns 0 on success
106 */
107 virtual int RenderAudio(uint Samples) OVERRIDE {
108 dmsg(8,("RenderAudio(Samples=%d)\n", Samples));
109
110 // return if engine disabled
111 if (EngineDisabled.Pop()) {
112 dmsg(5,("EngineBase: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));
113 EngineDisabled.RttDone();
114 return 0;
115 }
116
117 // process requests for suspending / resuming regions (i.e. to avoid
118 // crashes while these regions are modified by an instrument editor)
119 ProcessSuspensionsChanges();
120
121 // update time of start and end of this audio fragment (as events' time stamps relate to this)
122 pEventGenerator->UpdateFragmentTime(Samples);
123
124 // We only allow the given maximum number of voices to be spawned
125 // in each audio fragment. All subsequent request for spawning new
126 // voices in the same audio fragment will be ignored.
127 VoiceSpawnsLeft = MaxVoices();
128
129 // get all events from the engine's global input event queue which belong to the current fragment
130 // (these are usually just SysEx messages)
131 ImportEvents(Samples);
132
133 // process engine global events (these are currently only MIDI System Exclusive messages)
134 {
135 RTList<Event>::Iterator itEvent = pGlobalEvents->first();
136 RTList<Event>::Iterator end = pGlobalEvents->end();
137 for (; itEvent != end; ++itEvent) {
138 switch (itEvent->Type) {
139 case Event::type_sysex:
140 dmsg(5,("Engine: Sysex received\n"));
141 ProcessSysex(itEvent);
142 break;
143 }
144 }
145 }
146
147 // In case scale tuning has been changed, recalculate pitch for
148 // all active voices.
149 ProcessScaleTuningChange();
150
151 // reset internal voice counter (just for statistic of active voices)
152 ActiveVoiceCountTemp = 0;
153
154 HandleInstrumentChanges();
155
156 // handle events on all engine channels
157 for (int i = 0; i < engineChannels.size(); i++) {
158 ProcessEvents(engineChannels[i], Samples);
159 }
160
161 // render all 'normal', active voices on all engine channels
162 for (int i = 0; i < engineChannels.size(); i++) {
163 RenderActiveVoices(engineChannels[i], Samples);
164 }
165
166 // now that all ordinary voices on ALL engine channels are rendered, render new stolen voices
167 RenderStolenVoices(Samples);
168
169 // handle audio routing for engine channels with FX sends
170 for (int i = 0; i < engineChannels.size(); i++) {
171 AbstractEngineChannel* pChannel = static_cast<AbstractEngineChannel*>(engineChannels[i]);
172 if (pChannel->fxSends.empty()) continue; // ignore if no FX sends
173 RouteAudio(engineChannels[i], Samples);
174 }
175
176 // handle cleanup on all engine channels for the next audio fragment
177 for (int i = 0; i < engineChannels.size(); i++) {
178 PostProcess(engineChannels[i]);
179 }
180
181
182 // empty the engine's event list for the next audio fragment
183 ClearEventLists();
184
185 // reset voice stealing for the next audio fragment
186 pVoiceStealingQueue->clear();
187
188 // just some statistics about this engine instance
189 SetVoiceCount(ActiveVoiceCountTemp);
190 if (VoiceCount() > ActiveVoiceCountMax) ActiveVoiceCountMax = VoiceCount();
191
192 // in case regions were previously suspended and we killed voices
193 // with disk streams due to that, check if those streams have finally
194 // been deleted by the disk thread
195 if (iPendingStreamDeletions) ProcessPendingStreamDeletions();
196
197 // Release the instrument change command. (This has to
198 // be done after all voices have been rendered and not
199 // in HandleInstrumentChanges, as the RegionsInUse
200 // list has been built up by the voice renderers.)
201 for (int i = 0; i < engineChannels.size(); i++) {
202 EngineChannelBase<V, R, I>* channel =
203 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
204 channel->InstrumentChangeCommandReader.Unlock();
205 }
206 FrameTime += Samples;
207
208 EngineDisabled.RttDone();
209 return 0;
210 }
211
212 virtual int MaxVoices() OVERRIDE { return pVoicePool->poolSize(); }
213
214 virtual void SetMaxVoices(int iVoices) throw (Exception) OVERRIDE {
215 if (iVoices < 1)
216 throw Exception("Maximum voices for an engine cannot be set lower than 1");
217
218 SuspendAll();
219
220 // NOTE: we need to clear pRegionsInUse before deleting pDimRegionPool,
221 // otherwise memory corruption will occur if there are active voices (see bug #118)
222 for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
223 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannel]);
224 pChannel->ClearRegionsInUse();
225 }
226
227 if (pRegionPool[0]) delete pRegionPool[0];
228 if (pRegionPool[1]) delete pRegionPool[1];
229
230 pRegionPool[0] = new Pool<R*>(iVoices);
231 pRegionPool[1] = new Pool<R*>(iVoices);
232
233 for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
234 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannel]);
235 pChannel->ResetRegionsInUse(pRegionPool);
236 }
237
238 try {
239 pVoicePool->resizePool(iVoices);
240 } catch (...) {
241 throw Exception("FATAL: Could not resize voice pool!");
242 }
243
244 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
245 iterVoice->SetEngine(this);
246 iterVoice->pDiskThread = this->pDiskThread;
247 }
248 pVoicePool->clear();
249
250 PostSetMaxVoices(iVoices);
251 ResumeAll();
252 }
253
254 /** Called after the new max number of voices is set and before resuming the engine. */
255 virtual void PostSetMaxVoices(int iVoices) { }
256
257 virtual uint DiskStreamCount() OVERRIDE { return (pDiskThread) ? pDiskThread->GetActiveStreamCount() : 0; }
258 virtual uint DiskStreamCountMax() OVERRIDE { return (pDiskThread) ? pDiskThread->ActiveStreamCountMax : 0; }
259 virtual int MaxDiskStreams() OVERRIDE { return iMaxDiskStreams; }
260
261 virtual void SetMaxDiskStreams(int iStreams) throw (Exception) OVERRIDE {
262 if (iStreams < 0)
263 throw Exception("Maximum disk streams for an engine cannot be set lower than 0");
264
265 SuspendAll();
266
267 iMaxDiskStreams = iStreams;
268
269 // reconnect to audio output device, because that will automatically
270 // recreate the disk thread with the required amount of streams
271 if (pAudioOutputDevice) Connect(pAudioOutputDevice);
272
273 ResumeAll();
274 }
275
276 virtual String DiskStreamBufferFillBytes() OVERRIDE { return (pDiskThread) ? pDiskThread->GetBufferFillBytes() : ""; }
277 virtual String DiskStreamBufferFillPercentage() OVERRIDE { return (pDiskThread) ? pDiskThread->GetBufferFillPercentage() : ""; }
278 virtual InstrumentManager* GetInstrumentManager() OVERRIDE { return &instruments; }
279
280 /**
281 * Connect this engine instance with the given audio output device.
282 * This method will be called when an Engine instance is created.
283 * All of the engine's data structures which are dependant to the used
284 * audio output device / driver will be (re)allocated and / or
285 * adjusted appropriately.
286 *
287 * @param pAudioOut - audio output device to connect to
288 */
289 virtual void Connect(AudioOutputDevice* pAudioOut) OVERRIDE {
290 // caution: don't ignore if connecting to the same device here,
291 // because otherwise SetMaxDiskStreams() implementation won't work anymore!
292
293 pAudioOutputDevice = pAudioOut;
294
295 ResetInternal();
296
297 // inform audio driver for the need of two channels
298 try {
299 pAudioOutputDevice->AcquireChannels(2); // default stereo
300 }
301 catch (AudioOutputException e) {
302 String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();
303 throw Exception(msg);
304 }
305
306 this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle();
307 this->SampleRate = pAudioOutputDevice->SampleRate();
308
309 MinFadeOutSamples = int(double(SampleRate) * CONFIG_EG_MIN_RELEASE_TIME) - 1;
310 if (MaxSamplesPerCycle < MinFadeOutSamples) {
311 std::cerr << "EngineBase: WARNING, CONFIG_EG_MIN_RELEASE_TIME "
312 << "too big for current audio fragment size & sampling rate! "
313 << "May lead to click sounds if voice stealing chimes in!\n" << std::flush;
314 // force volume ramp downs at the beginning of each fragment
315 MinFadeOutSamples = MaxSamplesPerCycle;
316 // lower minimum release time
317 const float minReleaseTime = (float) MaxSamplesPerCycle / (float) SampleRate;
318 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
319 iterVoice->CalculateFadeOutCoeff(minReleaseTime, SampleRate);
320 }
321 pVoicePool->clear();
322 }
323
324 // (re)create disk thread
325 if (this->pDiskThread) {
326 dmsg(1,("Stopping disk thread..."));
327 this->pDiskThread->StopThread();
328 delete this->pDiskThread;
329 dmsg(1,("OK\n"));
330 }
331 this->pDiskThread = CreateDiskThread();
332
333 if (!pDiskThread) {
334 dmsg(0,("EngineBase new diskthread = NULL\n"));
335 exit(EXIT_FAILURE);
336 }
337
338 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
339 iterVoice->pDiskThread = this->pDiskThread;
340 dmsg(3,("d"));
341 }
342 pVoicePool->clear();
343
344 // (re)create event generator
345 if (pEventGenerator) delete pEventGenerator;
346 pEventGenerator = new EventGenerator(pAudioOut->SampleRate());
347
348 dmsg(1,("Starting disk thread..."));
349 pDiskThread->StartThread();
350 dmsg(1,("OK\n"));
351
352 bool printEqInfo = true;
353 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
354 if (!iterVoice->pDiskThread) {
355 dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));
356 exit(EXIT_FAILURE);
357 }
358
359 iterVoice->CreateEq();
360
361 if(printEqInfo) {
362 iterVoice->PrintEqInfo();
363 printEqInfo = false;
364 }
365 }
366 pVoicePool->clear();
367
368 // (re)create dedicated voice audio buffers
369 //TODO: we could optimize resource usage a bit by just allocating these dedicated voice buffers when there is at least one engine channel with FX sends, because only in this case those special buffers are used actually, but since it would usually only save couple bytes in total, its probably not worth it
370 if (pDedicatedVoiceChannelLeft) delete pDedicatedVoiceChannelLeft;
371 if (pDedicatedVoiceChannelRight) delete pDedicatedVoiceChannelRight;
372 pDedicatedVoiceChannelLeft = new AudioChannel(0, MaxSamplesPerCycle);
373 pDedicatedVoiceChannelRight = new AudioChannel(1, MaxSamplesPerCycle);
374 }
375
376 // Implementattion for abstract method derived from Engine.
377 virtual void ReconnectAudioOutputDevice() OVERRIDE {
378 SuspendAll();
379 if (pAudioOutputDevice) Connect(pAudioOutputDevice);
380 ResumeAll();
381 }
382
383 /**
384 * Similar to @c Disable() but this method additionally kills all voices
385 * and disk streams and blocks until all voices and disk streams are actually
386 * killed / deleted.
387 *
388 * @e Note: only the original calling thread is able to re-enable the
389 * engine afterwards by calling @c ResumeAll() later on!
390 */
391 virtual void SuspendAll() {
392 dmsg(2,("Engine: Suspending all ...\n"));
393 // stop the engine, so we can safely modify the engine's
394 // data structures from this foreign thread
395 DisableAndLock();
396 // we could also use the respective class member variable here,
397 // but this is probably safer and cleaner
398 int iPendingStreamDeletions = 0;
399 // kill all voices on all engine channels the *die hard* way
400 for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
401 EngineChannelBase<V, R, I>* pEngineChannel =
402 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannel]);
403
404 iPendingStreamDeletions += pEngineChannel->KillAllVoicesImmediately();
405 }
406 // wait until all streams were actually deleted by the disk thread
407 while (iPendingStreamDeletions) {
408 while (
409 iPendingStreamDeletions &&
410 pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE
411 ) iPendingStreamDeletions--;
412 if (!iPendingStreamDeletions) break;
413 usleep(10000); // sleep for 10ms
414 }
415 dmsg(2,("EngineBase: Everything suspended.\n"));
416 }
417
418 /**
419 * At the moment same as calling @c Enable() directly, but this might
420 * change in future, so better call this method as counterpart to
421 * @c SuspendAll() instead of @c Enable() !
422 */
423 virtual void ResumeAll() { Enable(); }
424
425 /**
426 * Order the engine to stop rendering audio for the given region.
427 * Additionally this method will block until all voices and their disk
428 * streams associated with that region are actually killed / deleted, so
429 * one can i.e. safely modify the region with an instrument editor after
430 * returning from this method.
431 *
432 * @param pRegion - region the engine shall stop using
433 */
434 virtual void Suspend(RR* pRegion) {
435 dmsg(2,("EngineBase: Suspending Region %x ...\n",pRegion));
436 {
437 LockGuard lock(SuspendedRegionsMutex);
438 SuspensionChangeOngoing.Set(true);
439 pPendingRegionSuspension = pRegion;
440 SuspensionChangeOngoing.WaitAndUnlockIf(true);
441 }
442 dmsg(2,("EngineBase: Region %x suspended.",pRegion));
443 }
444
445 /**
446 * Orders the engine to resume playing back the given region, previously
447 * suspended with @c Suspend() .
448 *
449 * @param pRegion - region the engine shall be allowed to use again
450 */
451 virtual void Resume(RR* pRegion) {
452 dmsg(2,("EngineBase: Resuming Region %x ...\n",pRegion));
453 {
454 LockGuard lock(SuspendedRegionsMutex);
455 SuspensionChangeOngoing.Set(true);
456 pPendingRegionResumption = pRegion;
457 SuspensionChangeOngoing.WaitAndUnlockIf(true);
458 }
459 dmsg(2,("EngineBase: Region %x resumed.\n",pRegion));
460 }
461
462 virtual void ResetSuspendedRegions() {
463 SuspendedRegions.clear();
464 iPendingStreamDeletions = 0;
465 pPendingRegionSuspension = pPendingRegionResumption = NULL;
466 SuspensionChangeOngoing.Set(false);
467 }
468
469 /**
470 * Called by the engine's (audio) thread once per cycle to process requests
471 * from the outer world to suspend or resume a given @c gig::Region .
472 */
473 virtual void ProcessSuspensionsChanges() {
474 // process request for suspending one region
475 if (pPendingRegionSuspension) {
476 // kill all voices on all engine channels that use this region
477 for (int iChannel = 0; iChannel < engineChannels.size(); iChannel++) {
478 EngineChannelBase<V, R, I>* pEngineChannel =
479 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannel]);
480 SuspensionVoiceHandler handler(pPendingRegionSuspension);
481 pEngineChannel->ProcessActiveVoices(&handler);
482 iPendingStreamDeletions += handler.PendingStreamDeletions;
483 }
484 // make sure the region is not yet on the list
485 bool bAlreadySuspended = false;
486 RootRegionIterator iter = SuspendedRegions.first();
487 RootRegionIterator end = SuspendedRegions.end();
488 for (; iter != end; ++iter) { // iterate through all suspended regions
489 if (*iter == pPendingRegionSuspension) { // found
490 bAlreadySuspended = true;
491 dmsg(1,("EngineBase: attempt to suspend an already suspended region !!!\n"));
492 break;
493 }
494 }
495 if (!bAlreadySuspended) {
496 // put the region on the list of suspended regions
497 RootRegionIterator iter = SuspendedRegions.allocAppend();
498 if (iter) {
499 *iter = pPendingRegionSuspension;
500 } else std::cerr << "EngineBase: Could not suspend Region, list is full. This is a bug!!!\n" << std::flush;
501 }
502 // free request slot for next caller (and to make sure that
503 // we're not going to process the same request in the next cycle)
504 pPendingRegionSuspension = NULL;
505 // if no disk stream deletions are pending, awaken other side, as
506 // we're done in this case
507 if (!iPendingStreamDeletions) SuspensionChangeOngoing.Set(false);
508 }
509
510 // process request for resuming one region
511 if (pPendingRegionResumption) {
512 // remove region from the list of suspended regions
513 RootRegionIterator iter = SuspendedRegions.first();
514 RootRegionIterator end = SuspendedRegions.end();
515 for (; iter != end; ++iter) { // iterate through all suspended regions
516 if (*iter == pPendingRegionResumption) { // found
517 SuspendedRegions.free(iter);
518 break; // done
519 }
520 }
521 // free request slot for next caller
522 pPendingRegionResumption = NULL;
523 // awake other side as we're done
524 SuspensionChangeOngoing.Set(false);
525 }
526 }
527
528 /**
529 * Called by the engine's (audio) thread once per cycle to check if
530 * streams of voices that were killed due to suspension request have
531 * finally really been deleted by the disk thread.
532 */
533 virtual void ProcessPendingStreamDeletions() {
534 if (!iPendingStreamDeletions) return;
535 //TODO: or shall we better store a list with stream handles instead of a scalar amount of streams to be deleted? might be safer
536 while (
537 iPendingStreamDeletions &&
538 pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE
539 ) iPendingStreamDeletions--;
540 // just for safety ...
541 while (pDiskThread->AskForDeletedStream() != Stream::INVALID_HANDLE);
542 // now that all disk streams are deleted, awake other side as
543 // we're finally done with suspending the requested region
544 if (!iPendingStreamDeletions) SuspensionChangeOngoing.Set(false);
545 }
546
547 /**
548 * Returns @c true if the given region is currently set to be suspended
549 * from being used, @c false otherwise.
550 */
551 virtual bool RegionSuspended(RR* pRegion) {
552 if (SuspendedRegions.isEmpty()) return false;
553 //TODO: or shall we use a sorted container instead of the RTList? might be faster ... or trivial ;-)
554 RootRegionIterator iter = SuspendedRegions.first();
555 RootRegionIterator end = SuspendedRegions.end();
556 for (; iter != end; ++iter) // iterate through all suspended regions
557 if (*iter == pRegion) return true;
558 return false;
559 }
560
561 // implementation of abstract method derived from class 'LinuxSampler::RegionPools'
562 virtual Pool<R*>* GetRegionPool(int index) {
563 if (index < 0 || index > 1) throw Exception("Index out of bounds");
564 return pRegionPool[index];
565 }
566
567 // implementation of abstract method derived from class 'LinuxSampler::VoicePool'
568 virtual Pool<V>* GetVoicePool() { return pVoicePool; }
569
570 D* GetDiskThread() { return pDiskThread; }
571
572 //friend class EngineChannelBase<V, R, I>;
573
574 static IM instruments;
575
576 protected:
577 class SuspensionVoiceHandler : public MidiKeyboardManager<V>::VoiceHandler {
578 public:
579 int PendingStreamDeletions;
580 RR* pPendingRegionSuspension;
581
582 SuspensionVoiceHandler(RR* pPendingRegionSuspension) {
583 PendingStreamDeletions = 0;
584 this->pPendingRegionSuspension = pPendingRegionSuspension;
585 }
586
587 virtual bool Process(MidiKey* pMidiKey) OVERRIDE {
588 VoiceIterator itVoice = pMidiKey->pActiveVoices->first();
589 // if current key is not associated with this region, skip this key
590 if (itVoice->GetRegion()->GetParent() != pPendingRegionSuspension) return false;
591
592 return true;
593 }
594
595 virtual void Process(VoiceIterator& itVoice) OVERRIDE {
596 // request a notification from disk thread side for stream deletion
597 const Stream::Handle hStream = itVoice->KillImmediately(true);
598 if (hStream != Stream::INVALID_HANDLE) { // voice actually used a stream
599 PendingStreamDeletions++;
600 }
601 //NOTE: maybe we should call FreeVoice() here, shouldn't cause a harm though I think, since the voices should be freed by RenderActiveVoices() in the render loop, they are probably just freed a bit later than they could/should be
602 }
603 };
604
605 Pool<R*>* pRegionPool[2]; ///< Double buffered pool, used by the engine channels to keep track of regions in use.
606 int MinFadeOutSamples; ///< The number of samples needed to make an instant fade out (e.g. for voice stealing) without leading to clicks.
607 D* pDiskThread;
608
609 int ActiveVoiceCountTemp; ///< number of currently active voices (for internal usage, will be used for incrementation)
610 VoiceIterator itLastStolenVoice; ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.
611 RTList<uint>::Iterator iuiLastStolenKey; ///< Only for voice stealing: key number of last key on which the last voice was theft in current audio fragment, NULL otherwise.
612 EngineChannelBase<V, R, I>* pLastStolenChannel; ///< Only for voice stealing: points to the engine channel on which the previous voice was stolen in this audio fragment.
613 VoiceIterator itLastStolenVoiceGlobally; ///< Same as itLastStolenVoice, but engine globally
614 RTList<uint>::Iterator iuiLastStolenKeyGlobally; ///< Same as iuiLastStolenKey, but engine globally
615 RTList<Event>* pVoiceStealingQueue; ///< All voice-launching events which had to be postponed due to free voice shortage.
616 Mutex ResetInternalMutex; ///< Mutex to protect the ResetInternal function for concurrent usage (e.g. by the lscp and instrument loader threads).
617 int iMaxDiskStreams;
618
619 /**
620 * Dispatch and handle all events in this audio fragment for the given
621 * engine channel.
622 *
623 * @param pEngineChannel - engine channel on which events should be
624 * processed
625 * @param Samples - amount of sample points to be processed in
626 * this audio fragment cycle
627 */
628 void ProcessEvents(EngineChannel* pEngineChannel, uint Samples) {
629 // get all events from the engine channels's input event queue which belong to the current fragment
630 // (these are the common events like NoteOn, NoteOff, ControlChange, etc.)
631 AbstractEngineChannel* pChannel = static_cast<AbstractEngineChannel*>(pEngineChannel);
632 pChannel->ImportEvents(Samples);
633
634 // if a valid real-time instrument script is loaded, pre-process
635 // the event list by running the script now, since the script
636 // might filter events or add new ones for this cycle
637 if (pChannel->pScript && pChannel->pScript->bHasValidScript) {
638 // resume any suspended script executions still hanging
639 // around of previous audio fragment cycles
640 for (RTList<ScriptEvent>::Iterator itEvent = pChannel->pScript->pEvents->first(),
641 end = pChannel->pScript->pEvents->end(); itEvent != end; ++itEvent)
642 {
643 ResumeScriptEvent(pChannel, itEvent); //TODO: implement support for actual suspension time (i.e. passed to a script's wait() function call)
644 }
645
646 // spawn new script executions for the new MIDI events of
647 // this audio fragment cycle
648 for (RTList<Event>::Iterator itEvent = pChannel->pEvents->first(),
649 end = pChannel->pEvents->end(); itEvent != end; ++itEvent)
650 {
651 switch (itEvent->Type) {
652 case Event::type_note_on:
653 if (pChannel->pScript->handlerNote)
654 ProcessEventByScript(pChannel, itEvent, pChannel->pScript->handlerNote);
655 break;
656 case Event::type_note_off:
657 if (pChannel->pScript->handlerRelease)
658 ProcessEventByScript(pChannel, itEvent, pChannel->pScript->handlerRelease);
659 break;
660 case Event::type_control_change:
661 case Event::type_channel_pressure:
662 case Event::type_pitchbend:
663 if (pChannel->pScript->handlerController)
664 ProcessEventByScript(pChannel, itEvent, pChannel->pScript->handlerController);
665 break;
666 case Event::type_note_pressure:
667 //TODO: ...
668 break;
669 }
670 }
671 }
672
673 // now process all events regularly
674 {
675 RTList<Event>::Iterator itEvent = pChannel->pEvents->first();
676 RTList<Event>::Iterator end = pChannel->pEvents->end();
677 for (; itEvent != end; ++itEvent) {
678 switch (itEvent->Type) {
679 case Event::type_note_on:
680 dmsg(5,("Engine: Note on received\n"));
681 ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
682 break;
683 case Event::type_note_off:
684 dmsg(5,("Engine: Note off received\n"));
685 ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
686 break;
687 case Event::type_control_change:
688 dmsg(5,("Engine: MIDI CC received\n"));
689 ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);
690 break;
691 case Event::type_channel_pressure:
692 dmsg(5,("Engine: MIDI Chan. Pressure received\n"));
693 ProcessChannelPressure((EngineChannel*)itEvent->pEngineChannel, itEvent);
694 break;
695 case Event::type_note_pressure:
696 dmsg(5,("Engine: MIDI Note Pressure received\n"));
697 ProcessPolyphonicKeyPressure((EngineChannel*)itEvent->pEngineChannel, itEvent);
698 break;
699 case Event::type_pitchbend:
700 dmsg(5,("Engine: Pitchbend received\n"));
701 ProcessPitchbend(static_cast<AbstractEngineChannel*>(itEvent->pEngineChannel), itEvent);
702 break;
703 }
704 }
705 }
706
707 // reset voice stealing for the next engine channel (or next audio fragment)
708 itLastStolenVoice = VoiceIterator();
709 itLastStolenVoiceGlobally = VoiceIterator();
710 iuiLastStolenKey = RTList<uint>::Iterator();
711 iuiLastStolenKeyGlobally = RTList<uint>::Iterator();
712 pLastStolenChannel = NULL;
713 }
714
715 /** @brief Call instrument script's event handler for this event.
716 *
717 * Causes a new execution instance of the currently loaded real-time
718 * instrument script's event handler (callback) to be spawned for
719 * the given MIDI event.
720 *
721 * @param pChannel - engine channel on which the MIDI event occured
722 * @param itEvent - MIDI event that causes this new script execution
723 * @param pEventHandler - script's event handler to be executed
724 */
725 void ProcessEventByScript(AbstractEngineChannel* pChannel, RTList<Event>::Iterator& itEvent, VMEventHandler* pEventHandler) {
726 RTList<ScriptEvent>::Iterator itScriptEvent =
727 pChannel->pScript->pEvents->allocAppend();
728
729 if (!itScriptEvent) return; // no free script event left for execution
730
731 // fill the list of script handlers to be executed by this event
732 int i = 0;
733 itScriptEvent->handlers[i++] = pEventHandler; // actual event handler (i.e. note, controller)
734 itScriptEvent->handlers[i] = NULL; // NULL termination of list
735
736 // initialize/reset other members
737 itScriptEvent->cause = *itEvent;
738 itScriptEvent->id = pEventPool->getID(itEvent);
739 itScriptEvent->currentHandler = 0;
740 itScriptEvent->executionSlices = 0;
741
742 // run script handler(s)
743 VMExecStatus_t res = pScriptVM->exec(
744 pChannel->pScript->parserContext, &*itScriptEvent
745 );
746
747 // in case the script was suspended, keep it on the allocated
748 // ScriptEvent list to be continued on the next audio cycle,
749 // otherwise if execution has been finished, free it for a new
750 // future script event to be triggered from start
751 if (!(res & VM_EXEC_SUSPENDED))
752 pChannel->pScript->pEvents->free(itScriptEvent);
753 }
754
755 /** @brief Resume execution of instrument script.
756 *
757 * Will be called to resume execution of a real-time instrument
758 * script event which has been suspended in a previous audio
759 * fragment cycle.
760 *
761 * Script execution might be suspended for various reasons. Usually
762 * a script will be suspended if the script called the built-in
763 * "wait()" function, but it might also be suspended automatically
764 * if the script took too much execution time in an audio fragment
765 * cycle. So in the latter case automatic suspension is performed in
766 * order to avoid harm for the sampler's overall real-time
767 * requirements.
768 *
769 * @param pChannel - engine channel this script is running for
770 * @param itScriptEvent - script execution that shall be resumed
771 */
772 void ResumeScriptEvent(AbstractEngineChannel* pChannel, RTList<ScriptEvent>::Iterator& itScriptEvent) {
773 // run script
774 VMExecStatus_t res = pScriptVM->exec(
775 pChannel->pScript->parserContext, &*itScriptEvent
776 );
777 // in case the script was again suspended, keep it on the allocated
778 // ScriptEvent list to be continued on the next audio cycle,
779 // otherwise if execution has been finished, free it for a new
780 // future script event to be triggered from start
781 if (!(res & VM_EXEC_SUSPENDED))
782 pChannel->pScript->pEvents->free(itScriptEvent);
783 }
784
785 /**
786 * Will be called by LaunchVoice() method in case there are no free
787 * voices left. This method will select and kill one old voice for
788 * voice stealing and postpone the note-on event until the selected
789 * voice actually died.
790 *
791 * @param pEngineChannel - engine channel on which this event occured on
792 * @param itNoteOnEvent - key, velocity and time stamp of the event
793 * @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing
794 */
795 int StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
796 if (VoiceSpawnsLeft <= 0) {
797 dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));
798 return -1;
799 }
800
801 EngineChannelBase<V, R, I>* pEngineChn = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
802
803 if (!pEventPool->poolIsEmpty()) {
804
805 if(!pEngineChn->StealVoice(itNoteOnEvent, &itLastStolenVoice, &iuiLastStolenKey)) {
806 --VoiceSpawnsLeft;
807 return 0;
808 }
809
810 // if we couldn't steal a voice from the same engine channel then
811 // steal oldest voice on the oldest key from any other engine channel
812 // (the smaller engine channel number, the higher priority)
813 EngineChannelBase<V, R, I>* pSelectedChannel;
814 int iChannelIndex;
815 VoiceIterator itSelectedVoice;
816
817 // select engine channel
818 if (pLastStolenChannel) {
819 pSelectedChannel = pLastStolenChannel;
820 iChannelIndex = pSelectedChannel->iEngineIndexSelf;
821 } else { // pick the engine channel followed by this engine channel
822 iChannelIndex = (pEngineChn->iEngineIndexSelf + 1) % engineChannels.size();
823 pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);
824 }
825
826 // if we already stole in this fragment, try to proceed on same key
827 if (this->itLastStolenVoiceGlobally) {
828 itSelectedVoice = this->itLastStolenVoiceGlobally;
829 do {
830 ++itSelectedVoice;
831 } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle
832 }
833
834 #if CONFIG_DEVMODE
835 EngineChannel* pBegin = pSelectedChannel; // to detect endless loop
836 #endif // CONFIG_DEVMODE
837
838 // did we find a 'stealable' voice?
839 if (itSelectedVoice && itSelectedVoice->IsStealable()) {
840 // remember which voice we stole, so we can simply proceed on next voice stealing
841 this->itLastStolenVoiceGlobally = itSelectedVoice;
842 } else while (true) { // iterate through engine channels
843 // get (next) oldest key
844 RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first();
845 this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above)
846 while (iuiSelectedKey) {
847 MidiKey* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];
848 itSelectedVoice = pSelectedKey->pActiveVoices->first();
849 // proceed iterating if voice was created in this fragment cycle
850 while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
851 // found a "stealable" voice ?
852 if (itSelectedVoice && itSelectedVoice->IsStealable()) {
853 // remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing
854 this->iuiLastStolenKeyGlobally = iuiSelectedKey;
855 this->itLastStolenVoiceGlobally = itSelectedVoice;
856 this->pLastStolenChannel = pSelectedChannel;
857 goto stealable_voice_found; // selection succeeded
858 }
859 ++iuiSelectedKey; // get next key on current engine channel
860 }
861 // get next engine channel
862 iChannelIndex = (iChannelIndex + 1) % engineChannels.size();
863 pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);
864
865 #if CONFIG_DEVMODE
866 if (pSelectedChannel == pBegin) {
867 dmsg(1,("FATAL ERROR: voice stealing endless loop!\n"));
868 dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft));
869 dmsg(1,("Exiting.\n"));
870 exit(-1);
871 }
872 #endif // CONFIG_DEVMODE
873 }
874
875 // jump point if a 'stealable' voice was found
876 stealable_voice_found:
877
878 #if CONFIG_DEVMODE
879 if (!itSelectedVoice->IsActive()) {
880 dmsg(1,("EngineBase: ERROR, tried to steal a voice which was not active !!!\n"));
881 return -1;
882 }
883 #endif // CONFIG_DEVMODE
884
885 // now kill the selected voice
886 itSelectedVoice->Kill(itNoteOnEvent);
887
888 --VoiceSpawnsLeft;
889
890 return 0; // success
891 }
892 else {
893 dmsg(1,("Event pool emtpy!\n"));
894 return -1;
895 }
896 }
897
898 void HandleInstrumentChanges() {
899 bool instrumentChanged = false;
900 for (int i = 0; i < engineChannels.size(); i++) {
901 EngineChannelBase<V, R, I>* pEngineChannel =
902 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
903
904 // as we're going to (carefully) write some status to the
905 // synchronized struct, we cast away the const
906 InstrumentChangeCmd<R, I>& cmd =
907 const_cast<InstrumentChangeCmd<R, I>&>(pEngineChannel->InstrumentChangeCommandReader.Lock());
908
909 pEngineChannel->pRegionsInUse = cmd.pRegionsInUse;
910 pEngineChannel->pRegionsInUse->clear();
911
912 if (cmd.bChangeInstrument) {
913 // change instrument
914 dmsg(5,("Engine: instrument change command received\n"));
915 cmd.bChangeInstrument = false;
916 pEngineChannel->pInstrument = cmd.pInstrument;
917 pEngineChannel->pScript = cmd.pScript;
918 instrumentChanged = true;
919
920 pEngineChannel->MarkAllActiveVoicesAsOrphans();
921
922 // the script's "init" event handler is only executed
923 // once (when the script is loaded or reloaded)
924 if (pEngineChannel->pScript && pEngineChannel->pScript->handlerInit) {
925 RTList<ScriptEvent>::Iterator itScriptEvent =
926 pEngineChannel->pScript->pEvents->allocAppend();
927
928 itScriptEvent->cause.pEngineChannel = pEngineChannel;
929
930 VMExecStatus_t res = pScriptVM->exec(
931 pEngineChannel->pScript->parserContext, &*itScriptEvent
932 );
933
934 pEngineChannel->pScript->pEvents->free(itScriptEvent);
935 }
936 }
937 }
938
939 if (instrumentChanged) {
940 //TODO: this is a lazy solution ATM and not safe in case somebody is currently editing the instrument we're currently switching to (we should store all suspended regions on instrument manager side and when switching to another instrument copy that list to the engine's local list of suspensions
941 ResetSuspendedRegions();
942 }
943 }
944
945 /**
946 * Render all 'normal' voices (that is voices which were not stolen in
947 * this fragment) on the given engine channel.
948 *
949 * @param pEngineChannel - engine channel on which audio should be
950 * rendered
951 * @param Samples - amount of sample points to be rendered in
952 * this audio fragment cycle
953 */
954 void RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) {
955 #if !CONFIG_PROCESS_MUTED_CHANNELS
956 if (pEngineChannel->GetMute()) return; // skip if sampler channel is muted
957 #endif
958
959 EngineChannelBase<V, R, I>* pChannel =
960 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
961 pChannel->RenderActiveVoices(Samples);
962
963 ActiveVoiceCountTemp += pEngineChannel->GetVoiceCount();
964 }
965
966 /**
967 * Render all stolen voices (only voices which were stolen in this
968 * fragment) on the given engine channel. Stolen voices are rendered
969 * after all normal voices have been rendered; this is needed to render
970 * audio of those voices which were selected for voice stealing until
971 * the point were the stealing (that is the take over of the voice)
972 * actually happened.
973 *
974 * @param pEngineChannel - engine channel on which audio should be
975 * rendered
976 * @param Samples - amount of sample points to be rendered in
977 * this audio fragment cycle
978 */
979 void RenderStolenVoices(uint Samples) {
980 RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
981 RTList<Event>::Iterator end = pVoiceStealingQueue->end();
982 for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
983 EngineChannelBase<V, R, I>* pEngineChannel =
984 static_cast<EngineChannelBase<V, R, I>*>(itVoiceStealEvent->pEngineChannel);;
985 if (!pEngineChannel->pInstrument) continue; // ignore if no instrument loaded
986 PoolVoiceIterator itNewVoice =
987 LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false);
988 if (itNewVoice) {
989 itNewVoice->Render(Samples);
990 if (itNewVoice->IsActive()) { // still active
991 *(pEngineChannel->pRegionsInUse->allocAppend()) = itNewVoice->GetRegion();
992 ActiveVoiceCountTemp++;
993 pEngineChannel->SetVoiceCount(pEngineChannel->GetVoiceCount() + 1);
994
995 if (itNewVoice->PlaybackState == Voice::playback_state_disk) {
996 if (itNewVoice->DiskStreamRef.State != Stream::state_unused) {
997 pEngineChannel->SetDiskStreamCount(pEngineChannel->GetDiskStreamCount() + 1);
998 }
999 }
1000 } else { // voice reached end, is now inactive
1001 pEngineChannel->FreeVoice(itNewVoice); // remove voice from the list of active voices
1002 }
1003 }
1004 else dmsg(1,("EngineBase: ERROR, voice stealing didn't work out!\n"));
1005
1006 // we need to clear the key's event list explicitly here in case key was never active
1007 MidiKey* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key];
1008 pKey->VoiceTheftsQueued--;
1009 if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear();
1010 }
1011 }
1012
1013 /**
1014 * Free all keys which have turned inactive in this audio fragment, from
1015 * the list of active keys and clear all event lists on that engine
1016 * channel.
1017 *
1018 * @param pEngineChannel - engine channel to cleanup
1019 */
1020 void PostProcess(EngineChannel* pEngineChannel) {
1021 EngineChannelBase<V, R, I>* pChannel =
1022 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1023 pChannel->FreeAllInactiveKyes();
1024
1025 // empty the engine channel's own event lists
1026 pChannel->ClearEventLists();
1027 }
1028
1029 /**
1030 * Process MIDI control change events with hard coded behavior,
1031 * that is controllers whose behavior is defined independently
1032 * of the actual sampler engine type and instrument.
1033 *
1034 * @param pEngineChannel - engine channel on which the MIDI CC event was received
1035 * @param itControlChangeEvent - the actual MIDI CC event
1036 */
1037 void ProcessHardcodedControllers (
1038 EngineChannel* pEngineChannel,
1039 Pool<Event>::Iterator& itControlChangeEvent
1040 ) {
1041 EngineChannelBase<V, R, I>* pChannel =
1042 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1043
1044 switch (itControlChangeEvent->Param.CC.Controller) {
1045 case 5: { // portamento time
1046 pChannel->PortamentoTime = (float) itControlChangeEvent->Param.CC.Value / 127.0f * (float) CONFIG_PORTAMENTO_TIME_MAX + (float) CONFIG_PORTAMENTO_TIME_MIN;
1047 break;
1048 }
1049 case 6: { // data entry (currently only used for RPN and NRPN controllers)
1050 //dmsg(1,("DATA ENTRY %d\n", itControlChangeEvent->Param.CC.Value));
1051 if (pChannel->GetMidiRpnController() >= 0) { // RPN controller number was sent previously ...
1052 dmsg(4,("Guess it's an RPN ...\n"));
1053 if (pChannel->GetMidiRpnController() == 2) { // coarse tuning in half tones
1054 int transpose = (int) itControlChangeEvent->Param.CC.Value - 64;
1055 // limit to +- two octaves for now
1056 transpose = RTMath::Min(transpose, 24);
1057 transpose = RTMath::Max(transpose, -24);
1058 pChannel->GlobalTranspose = transpose;
1059 // workaround, so we won't have hanging notes
1060 pChannel->ReleaseAllVoices(itControlChangeEvent);
1061 }
1062 // to prevent other MIDI CC #6 messages to be misenterpreted as RPN controller data
1063 pChannel->ResetMidiRpnController();
1064 } else if (pChannel->GetMidiNrpnController() >= 0) { // NRPN controller number was sent previously ...
1065 dmsg(4,("Guess it's an NRPN ...\n"));
1066 const int NrpnCtrlMSB = pChannel->GetMidiNrpnController() >> 8;
1067 const int NrpnCtrlLSB = pChannel->GetMidiNrpnController() & 0xff;
1068 dmsg(4,("NRPN MSB=%d LSB=%d Data=%d\n", NrpnCtrlMSB, NrpnCtrlLSB, itControlChangeEvent->Param.CC.Value));
1069 switch (NrpnCtrlMSB) {
1070 case 0x1a: { // volume level of note (Roland GS NRPN)
1071 const uint note = NrpnCtrlLSB;
1072 const uint vol = itControlChangeEvent->Param.CC.Value;
1073 dmsg(4,("Note Volume NRPN received (note=%d,vol=%d).\n", note, vol));
1074 if (note < 128 && vol < 128)
1075 pChannel->pMIDIKeyInfo[note].Volume = VolumeCurve[vol];
1076 break;
1077 }
1078 case 0x1c: { // panpot of note (Roland GS NRPN)
1079 const uint note = NrpnCtrlLSB;
1080 const uint pan = itControlChangeEvent->Param.CC.Value;
1081 dmsg(4,("Note Pan NRPN received (note=%d,pan=%d).\n", note, pan));
1082 if (note < 128 && pan < 128) {
1083 pChannel->pMIDIKeyInfo[note].PanLeft = PanCurve[128 - pan];
1084 pChannel->pMIDIKeyInfo[note].PanRight = PanCurve[pan];
1085 }
1086 break;
1087 }
1088 case 0x1d: { // reverb send of note (Roland GS NRPN)
1089 const uint note = NrpnCtrlLSB;
1090 const float reverb = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1091 dmsg(4,("Note Reverb Send NRPN received (note=%d,send=%d).\n", note, reverb));
1092 if (note < 128)
1093 pChannel->pMIDIKeyInfo[note].ReverbSend = reverb;
1094 break;
1095 }
1096 case 0x1e: { // chorus send of note (Roland GS NRPN)
1097 const uint note = NrpnCtrlLSB;
1098 const float chorus = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1099 dmsg(4,("Note Chorus Send NRPN received (note=%d,send=%d).\n", note, chorus));
1100 if (note < 128)
1101 pChannel->pMIDIKeyInfo[note].ChorusSend = chorus;
1102 break;
1103 }
1104 }
1105 // to prevent other MIDI CC #6 messages to be misenterpreted as NRPN controller data
1106 pChannel->ResetMidiNrpnController();
1107 }
1108 break;
1109 }
1110 case 7: { // volume
1111 //TODO: not sample accurate yet
1112 pChannel->MidiVolume = VolumeCurve[itControlChangeEvent->Param.CC.Value];
1113 pChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag
1114 break;
1115 }
1116 case 10: { // panpot
1117 //TODO: not sample accurate yet
1118 pChannel->iLastPanRequest = itControlChangeEvent->Param.CC.Value;
1119 break;
1120 }
1121 case 64: { // sustain
1122 if (itControlChangeEvent->Param.CC.Value >= 64 && !pChannel->SustainPedal) {
1123 dmsg(4,("DAMPER (RIGHT) PEDAL DOWN\n"));
1124 pChannel->SustainPedal = true;
1125 pChannel->listeners.PreProcessSustainPedalDown();
1126
1127 #if !CONFIG_PROCESS_MUTED_CHANNELS
1128 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1129 pChannel->listeners.PostProcessSustainPedalDown();
1130 return;
1131 }
1132 #endif
1133
1134 pChannel->ProcessSustainPedalDown(itControlChangeEvent);
1135 pChannel->listeners.PostProcessSustainPedalDown();
1136 }
1137 if (itControlChangeEvent->Param.CC.Value < 64 && pChannel->SustainPedal) {
1138 dmsg(4,("DAMPER (RIGHT) PEDAL UP\n"));
1139 pChannel->SustainPedal = false;
1140 pChannel->listeners.PreProcessSustainPedalUp();
1141
1142 #if !CONFIG_PROCESS_MUTED_CHANNELS
1143 if (pChannel->GetMute()) { // skip if sampler channel is muted
1144 pChannel->listeners.PostProcessSustainPedalUp();
1145 return;
1146 }
1147 #endif
1148
1149 pChannel->ProcessSustainPedalUp(itControlChangeEvent);
1150 pChannel->listeners.PostProcessSustainPedalUp();
1151 }
1152 break;
1153 }
1154 case 65: { // portamento on / off
1155 const bool bPortamento = itControlChangeEvent->Param.CC.Value >= 64;
1156 if (bPortamento != pChannel->PortamentoMode)
1157 KillAllVoices(pChannel, itControlChangeEvent);
1158 pChannel->PortamentoMode = bPortamento;
1159 break;
1160 }
1161 case 66: { // sostenuto
1162 if (itControlChangeEvent->Param.CC.Value >= 64 && !pChannel->SostenutoPedal) {
1163 dmsg(4,("SOSTENUTO (CENTER) PEDAL DOWN\n"));
1164 pChannel->SostenutoPedal = true;
1165 pChannel->listeners.PreProcessSostenutoPedalDown();
1166
1167 #if !CONFIG_PROCESS_MUTED_CHANNELS
1168 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1169 pChannel->listeners.PostProcessSostenutoPedalDown();
1170 return;
1171 }
1172 #endif
1173
1174 pChannel->ProcessSostenutoPedalDown();
1175 pChannel->listeners.PostProcessSostenutoPedalDown();
1176 }
1177 if (itControlChangeEvent->Param.CC.Value < 64 && pChannel->SostenutoPedal) {
1178 dmsg(4,("SOSTENUTO (CENTER) PEDAL UP\n"));
1179 pChannel->SostenutoPedal = false;
1180 pChannel->listeners.PreProcessSostenutoPedalUp();
1181
1182 #if !CONFIG_PROCESS_MUTED_CHANNELS
1183 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1184 pChannel->listeners.PostProcessSostenutoPedalUp();
1185 return;
1186 }
1187 #endif
1188
1189 pChannel->ProcessSostenutoPedalUp(itControlChangeEvent);
1190 pChannel->listeners.PostProcessSostenutoPedalUp();
1191 }
1192 break;
1193 }
1194 case 98: { // NRPN controller LSB
1195 dmsg(4,("NRPN LSB %d\n", itControlChangeEvent->Param.CC.Value));
1196 pEngineChannel->SetMidiNrpnControllerLsb(itControlChangeEvent->Param.CC.Value);
1197 break;
1198 }
1199 case 99: { // NRPN controller MSB
1200 dmsg(4,("NRPN MSB %d\n", itControlChangeEvent->Param.CC.Value));
1201 pEngineChannel->SetMidiNrpnControllerMsb(itControlChangeEvent->Param.CC.Value);
1202 break;
1203 }
1204 case 100: { // RPN controller LSB
1205 dmsg(4,("RPN LSB %d\n", itControlChangeEvent->Param.CC.Value));
1206 pEngineChannel->SetMidiRpnControllerLsb(itControlChangeEvent->Param.CC.Value);
1207 break;
1208 }
1209 case 101: { // RPN controller MSB
1210 dmsg(4,("RPN MSB %d\n", itControlChangeEvent->Param.CC.Value));
1211 pEngineChannel->SetMidiRpnControllerMsb(itControlChangeEvent->Param.CC.Value);
1212 break;
1213 }
1214
1215
1216 // Channel Mode Messages
1217
1218 case 120: { // all sound off
1219 KillAllVoices(pEngineChannel, itControlChangeEvent);
1220 break;
1221 }
1222 case 121: { // reset all controllers
1223 pChannel->ResetControllers();
1224 break;
1225 }
1226 case 123: { // all notes off
1227 #if CONFIG_PROCESS_ALL_NOTES_OFF
1228 pChannel->ReleaseAllVoices(itControlChangeEvent);
1229 #endif // CONFIG_PROCESS_ALL_NOTES_OFF
1230 break;
1231 }
1232 case 126: { // mono mode on
1233 if (!pChannel->SoloMode)
1234 KillAllVoices(pEngineChannel, itControlChangeEvent);
1235 pChannel->SoloMode = true;
1236 break;
1237 }
1238 case 127: { // poly mode on
1239 if (pChannel->SoloMode)
1240 KillAllVoices(pEngineChannel, itControlChangeEvent);
1241 pChannel->SoloMode = false;
1242 break;
1243 }
1244 }
1245 }
1246
1247 virtual D* CreateDiskThread() = 0;
1248
1249 /**
1250 * Assigns and triggers a new voice for the respective MIDI key.
1251 *
1252 * @param pEngineChannel - engine channel on which this event occured on
1253 * @param itNoteOnEvent - key, velocity and time stamp of the event
1254 */
1255 virtual void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
1256 EngineChannelBase<V, R, I>* pChannel =
1257 static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1258
1259 //HACK: we should better add the transpose value only to the most mandatory places (like for retrieving the region and calculating the tuning), because otherwise voices will unintendedly survive when changing transpose while playing
1260 int k = itNoteOnEvent->Param.Note.Key + pChannel->GlobalTranspose;
1261 if (k < 0 || k > 127) return; //ignore keys outside the key range
1262
1263 itNoteOnEvent->Param.Note.Key += pChannel->GlobalTranspose;
1264 int vel = itNoteOnEvent->Param.Note.Velocity;
1265
1266 const int key = itNoteOnEvent->Param.Note.Key;
1267 MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1268
1269 pChannel->listeners.PreProcessNoteOn(key, vel);
1270 #if !CONFIG_PROCESS_MUTED_CHANNELS
1271 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1272 pChannel->listeners.PostProcessNoteOn(key, vel);
1273 return;
1274 }
1275 #endif
1276
1277 if (!pChannel->pInstrument) {
1278 pChannel->listeners.PostProcessNoteOn(key, vel);
1279 return; // ignore if no instrument loaded
1280 }
1281
1282 // move note on event to the key's own event list
1283 RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
1284
1285 // if Solo Mode then kill all already active voices
1286 if (pChannel->SoloMode) {
1287 Pool<uint>::Iterator itYoungestKey = pChannel->pActiveKeys->last();
1288 if (itYoungestKey) {
1289 const int iYoungestKey = *itYoungestKey;
1290 const MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[iYoungestKey];
1291 if (pOtherKey->Active) {
1292 // get final portamento position of currently active voice
1293 if (pChannel->PortamentoMode) {
1294 VoiceIterator itVoice = pOtherKey->pActiveVoices->last();
1295 if (itVoice) itVoice->UpdatePortamentoPos(itNoteOnEventOnKeyList);
1296 }
1297 // kill all voices on the (other) key
1298 VoiceIterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
1299 VoiceIterator end = pOtherKey->pActiveVoices->end();
1300 for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1301 if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1302 itVoiceToBeKilled->Kill(itNoteOnEventOnKeyList);
1303 }
1304 }
1305 }
1306 // set this key as 'currently active solo key'
1307 pChannel->SoloKey = key;
1308 }
1309
1310 pChannel->ProcessKeySwitchChange(key);
1311
1312 pKey->KeyPressed = true; // the MIDI key was now pressed down
1313 pChannel->KeyDown[key] = true; // just used as built-in %KEY_DOWN script variable
1314 pKey->Velocity = itNoteOnEventOnKeyList->Param.Note.Velocity;
1315 pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length
1316
1317 // cancel release process of voices on this key if needed
1318 if (pKey->Active && !pChannel->SustainPedal) {
1319 RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
1320 if (itCancelReleaseEvent) {
1321 *itCancelReleaseEvent = *itNoteOnEventOnKeyList; // copy event
1322 itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type
1323 }
1324 else dmsg(1,("Event pool emtpy!\n"));
1325 }
1326
1327 TriggerNewVoices(pEngineChannel, itNoteOnEventOnKeyList);
1328
1329 // if neither a voice was spawned or postponed then remove note on event from key again
1330 if (!pKey->Active && !pKey->VoiceTheftsQueued)
1331 pKey->pEvents->free(itNoteOnEventOnKeyList);
1332
1333 if (!pChannel->SoloMode || pChannel->PortamentoPos < 0.0f) pChannel->PortamentoPos = (float) key;
1334 if (pKey->pRoundRobinIndex) {
1335 (*pKey->pRoundRobinIndex)++; // counter specific for the key or region
1336 pChannel->RoundRobinIndex++; // common counter for the channel
1337 }
1338 pChannel->listeners.PostProcessNoteOn(key, vel);
1339 }
1340
1341 /**
1342 * Allocate and trigger new voice(s) for the key.
1343 */
1344 virtual void TriggerNewVoices (
1345 EngineChannel* pEngineChannel,
1346 RTList<Event>::Iterator& itNoteOnEvent,
1347 bool HandleKeyGroupConflicts = true
1348 ) = 0;
1349
1350 /**
1351 * Allocate and trigger release voice(s) for the key.
1352 */
1353 virtual void TriggerReleaseVoices (
1354 EngineChannel* pEngineChannel,
1355 RTList<Event>::Iterator& itNoteOffEvent
1356 ) = 0;
1357
1358 /**
1359 * Releases the voices on the given key if sustain pedal is not pressed.
1360 * If sustain is pressed, the release of the note will be postponed until
1361 * sustain pedal will be released or voice turned inactive by itself (e.g.
1362 * due to completion of sample playback).
1363 *
1364 * @param pEngineChannel - engine channel on which this event occured on
1365 * @param itNoteOffEvent - key, velocity and time stamp of the event
1366 */
1367 virtual void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {
1368 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1369
1370 int k = itNoteOffEvent->Param.Note.Key + pChannel->GlobalTranspose;
1371 if (k < 0 || k > 127) return; //ignore keys outside the key range
1372
1373 //HACK: we should better add the transpose value only to the most mandatory places (like for retrieving the region and calculating the tuning), because otherwise voices will unintendedly survive when changing transpose while playing
1374 itNoteOffEvent->Param.Note.Key += pChannel->GlobalTranspose;
1375 int vel = itNoteOffEvent->Param.Note.Velocity;
1376
1377 const int iKey = itNoteOffEvent->Param.Note.Key;
1378 MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];
1379
1380 pChannel->listeners.PreProcessNoteOff(iKey, vel);
1381
1382 #if !CONFIG_PROCESS_MUTED_CHANNELS
1383 if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1384 pChannel->listeners.PostProcessNoteOff(iKey, vel);
1385 return;
1386 }
1387 #endif
1388
1389 pKey->KeyPressed = false; // the MIDI key was now released
1390 pChannel->KeyDown[iKey] = false; // just used as built-in %KEY_DOWN script variable
1391
1392 // move event to the key's own event list
1393 RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
1394
1395 bool bShouldRelease = pKey->Active && pChannel->ShouldReleaseVoice(itNoteOffEventOnKeyList->Param.Note.Key);
1396
1397 // in case Solo Mode is enabled, kill all voices on this key and respawn a voice on the highest pressed key (if any)
1398 if (pChannel->SoloMode && pChannel->pInstrument) { //TODO: this feels like too much code just for handling solo mode :P
1399 bool bOtherKeysPressed = false;
1400 if (iKey == pChannel->SoloKey) {
1401 pChannel->SoloKey = -1;
1402 // if there's still a key pressed down, respawn a voice (group) on the highest key
1403 for (int i = 127; i > 0; i--) {
1404 MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[i];
1405 if (pOtherKey->KeyPressed) {
1406 bOtherKeysPressed = true;
1407 // make the other key the new 'currently active solo key'
1408 pChannel->SoloKey = i;
1409 // get final portamento position of currently active voice
1410 if (pChannel->PortamentoMode) {
1411 VoiceIterator itVoice = pKey->pActiveVoices->first();
1412 if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList);
1413 }
1414 // create a pseudo note on event
1415 RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend();
1416 if (itPseudoNoteOnEvent) {
1417 // copy event
1418 *itPseudoNoteOnEvent = *itNoteOffEventOnKeyList;
1419 // transform event to a note on event
1420 itPseudoNoteOnEvent->Type = Event::type_note_on;
1421 itPseudoNoteOnEvent->Param.Note.Key = i;
1422 itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity;
1423 // allocate and trigger new voice(s) for the other key
1424 TriggerNewVoices(pChannel, itPseudoNoteOnEvent, false);
1425 // if neither a voice was spawned or postponed then remove note on event from key again
1426 if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued)
1427 pOtherKey->pEvents->free(itPseudoNoteOnEvent);
1428
1429 } else dmsg(1,("Could not respawn voice, no free event left\n"));
1430 break; // done
1431 }
1432 }
1433 }
1434 if (bOtherKeysPressed) {
1435 if (pKey->Active) { // kill all voices on this key
1436 bShouldRelease = false; // no need to release, as we kill it here
1437 VoiceIterator itVoiceToBeKilled = pKey->pActiveVoices->first();
1438 VoiceIterator end = pKey->pActiveVoices->end();
1439 for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1440 if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1441 itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList);
1442 }
1443 }
1444 } else pChannel->PortamentoPos = -1.0f;
1445 }
1446
1447 // if no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed
1448 if (bShouldRelease) {
1449 itNoteOffEventOnKeyList->Type = Event::type_release; // transform event type
1450
1451 // spawn release triggered voice(s) if needed
1452 if (pKey->ReleaseTrigger && pChannel->pInstrument) {
1453 TriggerReleaseVoices(pChannel, itNoteOffEventOnKeyList);
1454 pKey->ReleaseTrigger = false;
1455 }
1456 }
1457
1458 // if neither a voice was spawned or postponed on this key then remove note off event from key again
1459 if (!pKey->Active && !pKey->VoiceTheftsQueued)
1460 pKey->pEvents->free(itNoteOffEventOnKeyList);
1461
1462 pChannel->listeners.PostProcessNoteOff(iKey, vel);
1463 }
1464
1465 /**
1466 * Reset all voices and disk thread and clear input event queue and all
1467 * control and status variables. This method is protected by a mutex.
1468 */
1469 virtual void ResetInternal() {
1470 LockGuard lock(ResetInternalMutex);
1471
1472 // make sure that the engine does not get any sysex messages
1473 // while it's reseting
1474 bool sysexDisabled = MidiInputPort::RemoveSysexListener(this);
1475 SetVoiceCount(0);
1476 ActiveVoiceCountMax = 0;
1477
1478 // reset voice stealing parameters
1479 pVoiceStealingQueue->clear();
1480 itLastStolenVoice = VoiceIterator();
1481 itLastStolenVoiceGlobally = VoiceIterator();
1482 iuiLastStolenKey = RTList<uint>::Iterator();
1483 iuiLastStolenKeyGlobally = RTList<uint>::Iterator();
1484 pLastStolenChannel = NULL;
1485
1486 // reset all voices
1487 for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
1488 iterVoice->Reset();
1489 }
1490 pVoicePool->clear();
1491
1492 // reset disk thread
1493 if (pDiskThread) pDiskThread->Reset();
1494
1495 // delete all input events
1496 pEventQueue->init();
1497 pSysexBuffer->init();
1498 if (sysexDisabled) MidiInputPort::AddSysexListener(this);
1499 }
1500
1501 /**
1502 * Kills all voices on an engine channel as soon as possible. Voices
1503 * won't get into release state, their volume level will be ramped down
1504 * as fast as possible.
1505 *
1506 * @param pEngineChannel - engine channel on which all voices should be killed
1507 * @param itKillEvent - event which caused this killing of all voices
1508 */
1509 virtual void KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) {
1510 EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1511 int count = pChannel->KillAllVoices(itKillEvent);
1512 VoiceSpawnsLeft -= count; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead
1513 }
1514
1515 /**
1516 * Allocates and triggers a new voice. This method will usually be
1517 * called by the ProcessNoteOn() method and by the voices itself
1518 * (e.g. to spawn further voices on the same key for layered sounds).
1519 *
1520 * @param pEngineChannel - engine channel on which this event occured on
1521 * @param itNoteOnEvent - key, velocity and time stamp of the event
1522 * @param iLayer - layer index for the new voice (optional - only
1523 * in case of layered sounds of course)
1524 * @param ReleaseTriggerVoice - if new voice is a release triggered voice
1525 * (optional, default = false)
1526 * @param VoiceStealing - if voice stealing should be performed
1527 * when there is no free voice
1528 * (optional, default = true)
1529 * @param HandleKeyGroupConflicts - if voices should be killed due to a
1530 * key group conflict
1531 * @returns pointer to new voice or NULL if there was no free voice or
1532 * if the voice wasn't triggered (for example when no region is
1533 * defined for the given key).
1534 */
1535 virtual PoolVoiceIterator LaunchVoice (
1536 EngineChannel* pEngineChannel,
1537 Pool<Event>::Iterator& itNoteOnEvent,
1538 int iLayer,
1539 bool ReleaseTriggerVoice,
1540 bool VoiceStealing,
1541 bool HandleKeyGroupConflicts
1542 ) = 0;
1543
1544 virtual int GetMinFadeOutSamples() { return MinFadeOutSamples; }
1545
1546 int InitNewVoice (
1547 EngineChannelBase<V, R, I>* pChannel,
1548 R* pRegion,
1549 Pool<Event>::Iterator& itNoteOnEvent,
1550 Voice::type_t VoiceType,
1551 int iLayer,
1552 int iKeyGroup,
1553 bool ReleaseTriggerVoice,
1554 bool VoiceStealing,
1555 typename Pool<V>::Iterator& itNewVoice
1556 ) {
1557 int key = itNoteOnEvent->Param.Note.Key;
1558 typename MidiKeyboardManager<V>::MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1559 if (itNewVoice) {
1560 // launch the new voice
1561 if (itNewVoice->Trigger(pChannel, itNoteOnEvent, pChannel->Pitch, pRegion, VoiceType, iKeyGroup) < 0) {
1562 dmsg(4,("Voice not triggered\n"));
1563 pKey->pActiveVoices->free(itNewVoice);
1564 }
1565 else { // on success
1566 --VoiceSpawnsLeft;
1567 if (!pKey->Active) { // mark as active key
1568 pKey->Active = true;
1569 pKey->itSelf = pChannel->pActiveKeys->allocAppend();
1570 *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
1571 }
1572 if (itNewVoice->Type & Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
1573 return 0; // success
1574 }
1575 }
1576 else if (VoiceStealing) {
1577 // try to steal one voice
1578 int result = StealVoice(pChannel, itNoteOnEvent);
1579 if (!result) { // voice stolen successfully
1580 // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
1581 RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
1582 if (itStealEvent) {
1583 *itStealEvent = *itNoteOnEvent; // copy event
1584 itStealEvent->Param.Note.Layer = iLayer;
1585 itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
1586 pKey->VoiceTheftsQueued++;
1587 }
1588 else dmsg(1,("Voice stealing queue full!\n"));
1589 }
1590 }
1591
1592 return -1;
1593 }
1594
1595 /**
1596 * Checks whether scale tuning setting has been changed since last
1597 * time this method was called, if yes, it recalculates the pitch
1598 * for all active voices.
1599 */
1600 void ProcessScaleTuningChange() {
1601 const bool changed = ScaleTuningChanged.readAndReset();
1602 if (!changed) return;
1603
1604 for (int i = 0; i < engineChannels.size(); i++) {
1605 EngineChannelBase<V, R, I>* channel =
1606 static_cast<EngineChannelBase<V, R, I>*>(engineChannels[i]);
1607 channel->OnScaleTuningChanged();
1608 }
1609 }
1610
1611 private:
1612 Pool<V>* pVoicePool; ///< Contains all voices that can be activated.
1613 Pool<RR*> SuspendedRegions;
1614 Mutex SuspendedRegionsMutex;
1615 Condition SuspensionChangeOngoing;
1616 RR* pPendingRegionSuspension;
1617 RR* pPendingRegionResumption;
1618 int iPendingStreamDeletions;
1619 };
1620
1621 template <class V, class RR, class R, class D, class IM, class I>
1622 IM EngineBase<V, RR, R, D, IM, I>::instruments;
1623
1624 } // namespace LinuxSampler
1625
1626 #endif /* __LS_ENGINEBASE_H__ */
1627

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